Vodacom signal

We have been struggling with a non-existent Vodacom signal at home (Sundowner in Randburg) for the last few months. When you contact them (when you find 1 bar of signal) and try and report it, you are given a USSD code to run, which surprise, surprise does not work because THERE IS NO SIGNAL! How are we as paying customers supposed to be taken seriously with a problem. We had an emergency and could not call for help.... not acceptable Vodacom